SIST EN ISO 12236:2026

Geosynthetics - Static puncture test (CBR test) (ISO 12236:2026)

This document specifies a method for the determination of the puncture resistance by measuring the force required to push a flat-ended plunger through geosynthetics.
The test is normally carried out on dry specimens conditioned in the specified atmosphere.
The test is applicable to most types of geosynthetic products, but does not apply to products with apertures greater than 10 mm.

Geokunststoffe - Stempeldurchdrückversuch (CBR-Versuch) (ISO 12236:2026)

Dieses Dokument legt ein Verfahren zur Bestimmung des Durchdrückwiderstandes durch Messung der benötigten Kraft beim Durchdrücken eines stumpfen Stempels durch Geokunststoffe fest.
Die Prüfung wird üblicherweise mit trockenen Messproben durchgeführt, die in dem festgelegten Klima konditioniert wurden.
Die Prüfung ist auf die meisten Produkte aus Geokunststoffen anwendbar, gilt jedoch nicht für Produkte mit Öffnungen größer als 10 mm.

Géosynthétiques - Essai de poinçonnement statique (essai CBR) (ISO 12236:2026)

Le présent document spécifie une méthode de détermination de la résistance au poinçonnement des géosynthétiques par mesurage de la force requise pour enfoncer un poinçon plat au travers de géosynthétiques.
L'essai est normalement réalisé sur des éprouvettes sèches conditionnées dans l'atmosphère spécifiée.
L'essai s'applique à la plupart des produits géosynthétiques mais n'est pas applicable aux produits présentant des ouvertures supérieures à 10 mm.

Geosintetike - Statični prebojni preskus z žigom (preskus CBR) (ISO 12236:2026)

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Jul-2024
• ICS: 59.080.70 - Geotextiles
• Technical Committee: ITEK - Textile and textile products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Jun-2026
• Due Date: 15-Aug-2026
• Ref Project: EN ISO 12236:2026 - Geosynthetics - Static puncture test (CBR test) (ISO 12236:2026)

Relations

• Referred By: SIST EN 13249:2016 - Geotextiles and geotextile-related products - Characteristics required for use in the construction of roads and other trafficked areas (excluding railways and asphalt inclusion)
• Effective Date: 27-May-2026
• Referred By: SIST EN 13491:2005 - Geosynthetic barriers - Characteristics required for use as a fluid barrier in the construction of tunnels and underground structures
• Effective Date: 27-May-2026
• Referred By: SIST EN 13254:2001 - Geotextiles and geotextile-related products - Characteristics required for use in the construction of reservoirs and dams
• Effective Date: 27-May-2026
• Referred By: SIST EN 13253:2016 - Geotextiles and geotextile-related products - Characteristics required for use in erosion control works (coastal protection, bank revetments)
• Effective Date: 27-May-2026
• Referred By: SIST EN 13252:2014 - Geotextiles and geotextile-related products - Characteristics required for use in drainage systems
• Effective Date: 27-May-2026
• Referred By: SIST EN 13256:2016 - Geotextiles and geotextile-related products - Characteristics required for use in the construction of tunnels and underground structures
• Effective Date: 27-May-2026
• Referred By: SIST EN 13491:2013 - Geosynthetic barriers - Characteristics required for use as a fluid barrier in the construction of tunnels and associated underground structures
• Effective Date: 27-May-2026
• Referred By: SIST EN 13250:2014 - Geotextiles and geotextile-related products - Characteristics required for use in the construction of railways
• Effective Date: 27-May-2026
• Referred By: SIST EN 13254:2016 - Geotextiles and geotextile-related products - Characteristics required for the use in the construction of reservoirs and dams
• Effective Date: 27-May-2026
• Referred By: SIST EN 13257:2001 - Geotextiles and geotextile-related products - Characteristics required for use in solid waste disposals
• Effective Date: 27-May-2026
• Referred By: SIST EN 13492:2005 - Geosynthetic barriers - Characteristics required for use in the construction of liquid waste disposal sites, transfer stations or secondary containment
• Effective Date: 27-May-2026
• Referred By: SIST EN 13257:2014 - Geotextiles and geotextile-related products - Characteristics required for use in solid waste disposals
• Effective Date: 27-May-2026
• Referred By: SIST EN 13361:2013 - Geosynthetic barriers - Characteristics required for use in the construction of reservoirs and dams
• Effective Date: 27-May-2026
• Referred By: SIST EN 13249:2014 - Geotextiles and geotextile-related products - Characteristics required for use in the construction of roads and other trafficked areas (excluding railways and asphalt inclusion)
• Effective Date: 27-May-2026
• Referred By: SIST EN 13250:2014+A1:2015 - Geotextiles and geotextile-related products - Characteristics required for use in the construction of railways
• Effective Date: 27-May-2026

Overview

SIST EN ISO 12236:2026 - Geosynthetics - Static puncture test (CBR test) establishes a uniform method for determining the puncture resistance of geosynthetic materials. This international standard, adopted by SIST, specifies the procedure for measuring the force required to push a flat-ended plunger through a geosynthetic specimen under controlled laboratory conditions. The static puncture test (also known as the California Bearing Ratio or CBR test) is primarily used to evaluate the mechanical robustness of geosynthetics such as geotextiles, geomembranes, and similar products with apertures not exceeding 10 mm.

Key Topics

• Puncture Resistance Measurement: The central focus is on scientifically measuring the force needed to penetrate geosynthetic materials with a standardized plunger. The test provides critical data for durability and design considerations.
• Standard Test Conditions: Testing is performed on dry specimens, conditioned under specified atmospheric conditions (20 ± 2 °C and 65 ± 5% relative humidity), ensuring consistent and reproducible results.
• Applicability: The methodology applies to most geosynthetic products except those with large apertures (>10 mm). Special considerations are noted for materials with different characteristics on each face.
• Testing Equipment: The standard describes requirements for the testing machine (compliant with ISO 7500-1) and details on both the plunger and clamping system design to eliminate sample slippage or damage during testing.
• Data Recording: Results are expressed including mean push-through force, coefficient of variation, and a force vs. displacement curve, supporting reliable material comparison and reporting.

Applications

ISO 12236:2026 is widely used in the geotechnical, civil, and environmental engineering fields for:

• Quality Control: Manufacturers and laboratories use the static puncture test to assess the strength and uniformity of geosynthetics before market release or installation.
• Specification Compliance: Projects that require geosynthetics for reinforcement, filtration, separation, or drainage can use this standard to verify material suitability according to project and regulatory requirements.
• Research & Development: R&D teams utilize these test results to compare different material compositions and structural designs, ensuring product advancement for demanding engineering projects.
• Design and Safety Assurance: Engineers incorporate puncture resistance data into design calculations for landfills, roadways, embankments, and other applications where mechanical integrity of the geosynthetic layer is critical.

Related Standards

For comprehensive assessment and traceability, ISO 12236:2026 should be used in conjunction with these geosynthetic and laboratory testing standards:

• ISO 554 – Standard atmospheres for conditioning and/or testing
• ISO 7500-1 – Metallic materials – Calibration and verification of testing machines
• ISO 9862 – Geosynthetics – Sampling and preparation of test specimens
• ISO 10320 – Geosynthetics – Identification on site

These supporting standards ensure accurate specimen preparation, material identification, and equipment calibration, resulting in valid and repeatable test outcomes.

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By following SIST EN ISO 12236:2026, industry professionals and laboratories can reliably evaluate geosynthetics' static puncture strength, enabling safer, more durable, and regulatory-compliant construction and infrastructure projects. The static puncture (CBR) test is fundamental for ensuring the suitability and resilience of geosynthetics in both current and emerging engineering applications.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 12236:2024
01-julij-2024
Geosintetike – Statični prebojni preskus z žigom (preskus CBR) (ISO/DIS
12236:2024)
Geosynthetics - Static puncture test (CBR test) (ISO/DIS 12236:2024)
Geokunststoffe - Stempeldurchdrückversuch (CBR-Versuch) (ISO/DIS 12236:2024)
Géosynthétiques - Essai de poinçonnement statique (essai CBR) (ISO/DIS 12236:2024)
Ta slovenski standard je istoveten z: prEN ISO 12236
ICS:
59.080.70 Geotekstilije Geotextiles
oSIST prEN ISO 12236:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 12236:2024
oSIST prEN ISO 12236:2024
DRAFT
International
Standard
ISO/DIS 12236
ISO/TC 221
Geosynthetics — Static puncture
Secretariat: BSI
test (CBR test)
Voting begins on:
Géosynthétiques — Essai de poinçonnement statique (essai CBR)
2024-06-04
Voting terminates on:
ICS: 59.080.70
2024-08-27
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 12236:2024(en)
oSIST prEN ISO 12236:2024
DRAFT
ISO/DIS 12236:2024(en)
International
Standard
ISO/DIS 12236
ISO/TC 221
Geosynthetics — Static puncture
Secretariat: BSI
test (CBR test)
Voting begins on:
Géosynthétiques — Essai de poinçonnement statique (essai CBR)
ICS: 59.080.70 Voting terminates on:
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
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TO SUBMIT, WITH THEIR COMMENTS,
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NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
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Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 12236:2024(en)
ii
oSIST prEN ISO 12236:2024
ISO/DIS 12236:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Specimens. 4
7 Conditioning . 4
8 Procedure . 5
9 Recording, calculation and expression of results . 5
9.1 Recording of data .5
9.2 Calculation and expression of results .5
10 Test report . 6

iii
oSIST prEN ISO 12236:2024
ISO/DIS 12236:2024(en)
Foreword
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